RT Journal Article
T1 Correlation between Geochemical and Multispectral Patterns in an Area Severely Contaminated by Former Hg-As Mining
A1 Boente López, Carlos
A1 Salgado, Lorena
A1 Romero Macías, Emilio Manuel
A1 López Sánchez, Carlos A.
AB In the context of soil pollution, plants suffer stress when exposed to extreme concentrationsof potentially toxic elements (PTEs). The alterations to the plants caused by such stressors can bemonitored by multispectral imagery in the form of vegetation indices, which can inform pollutionmanagement strategies. Here we combined geochemistry and remote sensing techniques to offera preliminary soil pollution assessment of a vast abandoned spoil heap in the surroundings ofLa Soterraña mining site (Asturias, Spain). To study the soil distribution of the PTEs over time,twenty-seven soil samples were randomly collected downstream of and around the main spoil heap.Furthermore, the area was covered by an unmanned aerial vehicle (UAV) carrying a high-resolutionmultispectral camera with four bands (red, green, red-edge and near infrared). Multielement analysisrevealed mercury and arsenic as principal pollutants. Two indices (from a database containing upto 55 indices) offered a proper correlation with the concentration of PTEs. These were: CARI2,presenting a Pearson Coefficient (PC) of 0.89 for concentrations >200 mg/kg of As; and NDVIg, PC of−0.67 for >40 mg/kg of Hg. The combined approach helps prediction of those areas susceptible togreatest pollution, thus reducing the costs of geochemical campaigns.
PB MDPI
SN 2220-9964
YR 2020
FD 2020-12
LK http://hdl.handle.net/10272/19524
UL http://hdl.handle.net/10272/19524
LA eng
NO Boente López, C., Salgado, L., Romero Macías, E. ... López Sánchez, C. A. (2020). Correlation between Geochemical and Multispectral Patterns in an Area Severely Contaminated by Former Hg-As Mining. ISPRS International Journal of Geo-Information, 9(12), 739. DOI: https://doi.org/10.3390/ijgi9120739
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026